Fixed syntax errors.

src/opcodes.js

@@ -13,7 +13,7 @@ const codes = {
   0x08: ['ADDMOD', 8, 3, 1, false],
   0x09: ['MULMOD', 8, 3, 1, false],
   0x0a: ['EXP', 10, 2, 1, false],
-  0x0b: ['SIGNEXTEND', 5, 1, 1, false]
+  0x0b: ['SIGNEXTEND', 5, 1, 1, false],
 
   // 0x10 range - bit ops
   0x10: ['LT', 3, 2, 1, false],

src/txBrowser.js

@@ -21,7 +21,7 @@ module.exports = React.createClass({
       this.setState({from: tx.from, to: tx.to, hash: tx.hash})
     }
     this.props.onNewTxRequested(this.state.blockNumber, parseInt(this.state.txNumber))
-  }
+  },
 
   updateBlockN: function (ev) {
     this.state.blockNumber = ev.target.value